Willerslev's group also identified base pair patterns in Inuk's nuclear DNA that are associated in modern populations with type A-positive blood and brown eyes, as well as with thick, dark hair and large, flat front teeth typical of Asians and Native Americans.

Wales recruitment officer Trudi Evans told the Echo stocks of blood, particularly O-negative and A-positive, were falling as many regular donors had been hit by seasonal colds and flu, and had been unable to attend donation sessions.

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